Forget the whole gang spin on why they are stopped more often and look at the FBI statistics.
They comprise 13% of the population
They are responsible for 80% of all crime
They are responsible for 88% of all violent crime
They comprise 48% of the prison population ( I think they've been given a break on that one..)
WTF else do you need to know?
When you don’t like what the statistics are telling you, you discredit the statistics.